diff --git a/autotests/testAddressRandomization/connection_test.py b/autotests/testAddressRandomization/connection_test.py
index 32163e0f..f9f62f7a 100644
--- a/autotests/testAddressRandomization/connection_test.py
+++ b/autotests/testAddressRandomization/connection_test.py
@@ -46,7 +46,7 @@ class Test(unittest.TestCase):
         perm_addr = device.address
 
         # 1. Test per-network deterministic MAC generation
-        os.system('cat pernetwork.psk > /tmp/iwd/ssidCCMP.psk')
+        IWD.copy_to_storage('pernetwork.psk', name='ssidCCMP.psk')
         new_addr = self.try_connection(wd)
         self.assertNotEqual(perm_addr, new_addr)
         # try again to ensure the generation was deterministic
@@ -54,7 +54,7 @@ class Test(unittest.TestCase):
         self.assertEqual(new_addr, new_addr2)
 
         # 2. Test FullAddressRandomization
-        os.system('cat full_random.psk > /tmp/iwd/ssidCCMP.psk')
+        IWD.copy_to_storage('full_random.psk', name='ssidCCMP.psk')
         new_addr = self.try_connection(wd)
         self.assertNotEqual(perm_addr, new_addr)
         # try again to make sure the generation was random
@@ -62,7 +62,7 @@ class Test(unittest.TestCase):
         self.assertNotEqual(new_addr, new_addr2)
 
         # 3. Test AddressOverride
-        os.system('cat override.psk > /tmp/iwd/ssidCCMP.psk')
+        IWD.copy_to_storage('override.psk', name='ssidCCMP.psk')
         new_addr = self.try_connection(wd)
         self.assertEqual(new_addr, 'e6:f6:38:a9:02:02')